LONGLEAF PINE. 13 
season after the fire the growth averaged 18.1 inches, still a little 
below the general average. 
PRODUCTION OF TIMBER. 
Second-growth longleaf pine is increasingly used for lumber, cross- 
ties (to be treated), cooperage, boxes, crates, pulp wood, mining 
timber, and fuel wood. Similar new uses for small-sized timber 
with wide rings and coarse texture have been successfully found in 
all the older timber-producing sections of the country. 
MEASUREMENTS of adjacent young longleaf stands, 
one burned and the other unburned for a period of 
five years, showed an average yearly growth under protection 
of 18.4 inches, but of only 5.8 inches when burned over 
every year. 
A tract of young longleaf saplings, under observation at 
Urania, La., after being burned over yearly for five years, 
contained longleaf saplings mostly up to 1 foot and none 
over 2.8 feet in height, while in a similar tract protected 
against fires one-sixth of the trees were over 2 feet and 
others ranged up to 7 feet in height. The two tracts origi- 
nally contained approximately the same number of longleaf 
seedlings and both had been continuously protected against 
hogs. 
The wood of longleaf pine is classed as heavy, hard, and strong. 
It has been for many years the standard of the southern yellow 
pines, and by far the leading wood of all southern species in point 
of amount of production and total value. This applies, of course, 
mainly to old-growth timber. Second-growth longleaf timber has 
wider annual rings and contains a higher percentage of sapwood. 
The amounts of various products referred to in the following tables 
and discussion are based upon measurements of sample areas selected 
as being representative of the best or ideal condition in respect to the 
density or number of trees per acre. Such well-stocked stands have 
enough trees so that all the available space and soil moisture are fully 
utilized. Fully stocked stands do not occur continuously over large 
areas, but are confined generally to tracts containing at most only a 
few acres, such as old fields or the paths of tropical hurricanes. The 
